publish_image.yml

name: Docker Image CI

on:
  push:
    branches: [ main ]
    tags:
      - '*'
  workflow_dispatch:
    
env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}
  DOCKER_CLI_EXPERIMENTAL: enabled

jobs:

  publish_image:

    runs-on: ubuntu-22.04

    steps:
    - name: Checkout
      uses: actions/checkout@v3
      
    - name: Log in to the Container registry
      uses: docker/login-action@v3
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Extract metadata (tags, labels) for Docker
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
        tags: |
          type=ref,event=tag,priority=200
          type=ref,event=branch,priority=200
          type=sha,priority=100,prefix=sha-,format=short

    - name: Set up QEMU
      uses: docker/setup-qemu-action@v3

    - name: Setup Docker buildx action
      uses: docker/setup-buildx-action@v3

    - name: Build and push the image
      uses: docker/build-push-action@v5
      with:
        context: .
        platforms: linux/amd64,linux/arm64
        push: true
        tags: ${{ steps.meta.outputs.tags }}
        labels: ${{ steps.meta.outputs.labels }}